What is this squeal noise ?

[Wallace White]

My A/C belt would squeal when it was too loose, each time the A/C
engaged (which is at random times). Does it happen if you set the
climate control to Econ? 

- Wallace
  '87 5kcstq 174k

Barry McInnes wrote:
> 
> Hi,
> I need some advice on a squealing noise that lasts up to 1-2 seconds, and
> randomly happens about once a day in normal driving.
> It mostly occurs when letting out the clutch and turning, but also happens with
> the clutch in and small revving (less frequent)
> 
> Opinion seems to be the bearings in the clutch, but is this the most likely or
> only cause ? Do I wait until its real bad, or can things get repaired "cheaply"
> before they get worse. Any tests to decide what it is ?
> 
> thanks in advance
> 1989 200 TQ 110K stock with SJM Chip and spring
> ------
> Barry Mc Innes
> Email: bjm at cdc.noaa.gov
> ------